In Change-Id I7cdd3f9171dbed45de0089defe29d2b59044bd84 we introduced
firmware support for SIMTRACE_MSGT_BD_CEMU_CONFIG. The respective
host part was so far only implemented in osmo-remsim-client-st2,
but not in libosmo-simtrace2. Let's fix that.
Change-Id: Ia4822d360a271d2ce9725f761cb95de58663ac3b